Journal
JOURNAL OF LOW TEMPERATURE PHYSICS
Volume 193, Issue 5-6, Pages 771-776Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-018-1968-2
Keywords
Neutrino mass; Microcalorimeters; TES; Microfabrication
Categories
Funding
- European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013)/ERC Grant [340321]
Ask authors/readers for more resources
HOLMES is aiming at a direct measurement of neutrino mass by performing a calorimetric measurement of the energy released in the decay of Ho-163. In such approach, the Ho-163 source, with the required activity, needs to be embedded in the detector. HOLMES will deploy a large array of transition-edge sensor microcalorimeters with implanted Ho-163 ions. While good progress has been made in optimizing single pixel design and fabrication to achieve the target resolution, a major challenge is the fabrication of arrays of such microcalorimeters with the required amount of Ho-163 ions embedded in the detectors absorber. We describe the multi-step microfabrication process implemented to produce the detector arrays for HOLMES. One crucial part of such process is the ability to perform co-deposition of gold during the Ho-163 implantation process on the detectors absorber. We describe the UHV target chamber, with integrated gold deposition system, we have built to achieve this goal.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available